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X-Original-To: nanog@nanog.org Date: Mon, 11 May 2015 14:40:15 -0700 From: Michael Thomas <mike@mtcc.com> To: nanog@nanog.org In-Reply-To: <F9D6D515-0389-44A7-9889-F621420A5F60@bloomcounty.org> Errors-To: nanog-bounces@nanog.org As it turns out, I've been playing around benchmarking things lately using the tried and true UnixBench suite and here are a few numbers that might put this in some perspective: 1) My new Rapsberry pi (4 cores, arm): 406 2) My home i5-like thing (asus 4 cores, 16gb's from last year): 3857 3) AWS c4.xlarge (4 cores, ~8gb's): 3666 So you'd need to, uh, wedge about 10 pi's to get one half way modern x86. Mike On 5/11/15 1:37 PM, Clay Fiske wrote: >> On May 8, 2015, at 10:24 PM, charles@thefnf.org wrote: >> >> Pi dimensions: >> >> 3.37 l (5 front to back) >> 2.21 w (6 wide) >> 0.83 h >> 25 per U (rounding down for Ethernet cable space etc) = 825 pi >> >> Cable management and heat would probably kill this before it ever reached completion, but lol… > > This feels like it should be a Friday thread. :) > > If you’re really going for density: > > - At 0.83 inches high you could go 2x per U (depends on your mounting system and how much space it burns) > - I’d expect you could get at least 7 wide if not 8 with the right micro-USB power connector > - In most datacenter racks I’ve seen you could get at least 8 deep even with cable breathing room > > So somewhere between 7x8x2 = 112 and 8x8x2 = 128 per U. And if you get truly creative about how you stack them you could probably beat that without too much effort. > > This doesn’t solve for cooling, but I think even at these numbers you could probably make it work with nice, tight cabling. > > > -c > >
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